I would go for 24S Tronic on 24S over 28S on the 30S controller.
They are super impressive controllers but their small size makes me doubt them if you want huge power for a long time. I don’t know how much power you need and how much motor/battery it is being paired with but 3shul is another place to checkout for huge VESCs.
Paramotors are awesome I wish you luck
edit: here’s one for sale on the forum